The masks on the volute handles of this vase represent Io, a priestess of the goddess Hera, at Argos, and one of the mortal lovers of Zeus. She is identified by the horns of the heifer into which she was transformed by the jealous Hera, wife of Zeus. Such elaborate volute handles, with modelled swans’ heads at their base, would have required enormous skill to make and fire successfully. This vase would have been used as part of offerings to the dead and been placed in a tomb. It is not known why the mask of Io was chosen to ornament the volute handles.